Title of Invention

ROLL SHELLING MACHINE FOR GRAINS DRHB-DRHC

Abstract 1. Roll shelters, especially mbber roll shellers(l) for hulling rice and other grains, which shows a housing (2) with an upper material inlet (4) and a lower material outlet (6), a feeding device for the grains, a pair of diagonally arranged rubber rolls (7,8) and a feeder chute (5) which is arranged almost perpendicular to the connecting line of the centres of the rubber rolls (7,8) and is inclined and adjustable, is characterized by the fact that a lever (11) that is linked at one end in a pivot (14) and at the other end in a pivot (16) of the mobile roll (8) and is connected with a link to a short lever (12), where by the short lever (12) connects the long lever (11) with the feeder chute (5) by a link.
Full Text FORM 2
THE PATENTS ACT, 1970
(39 of 1978)
COMPLETE SPECIFICATION (See Section 10)
ROLL SHELLING MACHINE FOR GRAINS DRHB-DRHC
BUHLER AG of CH-9240 UZWIL, SWITZERLAND, SWISS Company
The following specification particularly describes the nature of the invention and the manner in which it is to be performed :-


Roll shelling machine for grains DRHB-DRHC
The invention relates to a roller shelling machine for grains.
More particularly the invention relates to a rubber roll sheller for shelling rice or other grains, preferably for removing the raw husks from the grains.
Rubber roll shelters according to the prior art are well-known/ for example from the DE-C-2705334. These show a couple of rubber rolls with pneumatically controlled pressure. The raw rice is fed centrally through a feeding pipe in the roll gap of the horizontally placed rolls.
The rolls are placed in a suspended manner. With the help of a belt that runs around a driving roll, both rolls and a balancing roll a stable belt tension is achieved without having to regulate tension. To achieve an equal amount of wear for both the rolls, they have to be interchanged many times, which not only causes a higher maintainance expense, but also leads to a displacement of the optimal feeding point with respect to the roll gap.
Hence, already in the GB-PS 797372 a feed chute that is dependent on the displacement of the roll gap and that can swivel around a pivot is provided to balance out the displacement of the roll gap. The rolls as well as the feeder chute are both placed inclined, whereby the feeder chute is approximately perpendicular to the axle of the rolls. The feeder chute is steered by a lever mechanism and is tracked by the mobile roll depending on the roll diameter. At the same time, such an inclined chute makes it possible to achieve a specifically thin product film or feed layer thicknesses that are only a few grains thick and the feed speed of the grains obviously can be controlled at the optimum.
The EP-A-820814 shows a similar patent. In this state of technology, a gap displacement of +/- 10 mm is immediately seen as unthinkable. The tracking of the chute takes place through a separately controlled spindle stroke device.
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The invention is now based on the-task to simplify the steering of a feeder chute of a roll sheller according to the prior art. The solution of this task takes place with the help of vibro channel on the feeder chute.
The setting of the feeder chute with respect to the roll gap takes place directly through the bearing point (casing) of the mobile roll. Thus the setting parameters need not be measured from the rotating rolls. The setting of the feeder chute takes place in a simple construction and without intermediate steps of a signal change to separate setting devices.
The feeding takes place through a vibro channel on the feeder chute.
Accordingly there is provided Roll shelters, especially rubber roll shelters (1) for hulling rice and other grains, which shows a housing (2) with an upper material inlet (4) and a lower material outlet (6), a feeding device for the grains, a pair of diagonally arranged rubber rolls (7,8) and a feeder chute (5) which is arranged almost perpendicular to the connecting line of the centres of the rubber rolls (7,8) and is inclined and adjustable, is characterized by the fact that a lever (11) that is linked at one end in a pivot (14) and at the other end in a pivot (16) of the mobile roll (8) and is connected with a link to a short lever (12), where by the short lever (12) connects the long lever (11) with the feeder chute (5) by a link.
The invention will now be described with reference to figure 1 in the accompanying drawing.
Figure 1. is a sectional view of roller sheller machines for grains particularly husking roll.
Referring the figure 1; the rubber roll shelter machine 1 for hulling rice shows a housing 2, in whose upper part a vibro-feeder 3 is placed under a material inlet 4. Under the vibro-feeder 3 is a slanting pair of rubber rolls 7 and 8 , with the roll 8
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being mobile. A feeder chute 5 is placed around pivot 9 swiveling between the vibro-feeder 3 and the roll pair in such a way that the feeder chute 5 is almost perpendicular to the line connecting the centers of the rubber rolls 7,8, whereby, the base of the feeder chute 5 and the roll gap make a straight line. Through specific operation of the vibro-feeder 3, the rice grains can be guided to the roll gap over the feeder chute 5 in only 1-2 grain layers. In addition to that, the vibrofeeder shows a vibro channel 17 with a pressure relieving cone in inlet. The excitation frequency of the vibro channel 17 is adapted for the channel vibrating system by frequency converter control 18.
Under the rolls 7,8 there is an outlet 6 for the hulled grains and the hulls, from where they go to a husk separator which is not shown in the drawing.
The setting of the feeder chute 5 with respect to the roll gap 10 takes place by a lever mechanism which consists of a short lever 12 connected to the feeder chute 5 and a long lever 11 connected pivotally to the short lever 12. The long lever 11 can swivel around pivot 14 on housing 2 and the short lever 12 around a pivot 15 on the feeder chute 5. At the free end the long lever 11 is connected with the bearing point 16 of the mobile roll 8. With the help of a tension spring 13, the long lever 11 is pressed on the bearing casing of the mobile roll 8. With this, the long lever 11 remains on the bearing point 16 of the mobile roll 8 tightened by the spring 13. The short lever 12 connects the long lever 11 with the feeder chute 5.
The rolls 7,8 are fixed with taper hole bushes. The hulling power of the roils 7, 8 can be set by the mechanical weight of the drive and load moment generation by regulated air pressure through pneumatic cylinder. The drive contains an oscillating crank with belt guide which ensures an equal belt length while the oscillating crank sways. This is not depicted In the drawing.
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In case of corresponding position of lever 11 and 12 and corresponding length ratios, apart from linear even progressive movement adaption to the wear and tear of the rollers 7 and 8 can be achieved.
The adjustment device for the mobile roll 8, apart from other things, is not depicted explicitly in the drawings.
Terms of reference
1. Rubber roll shelter
2. Housing
3. Vibro-feeder
4. Material inlet
5. Feeder chute
6. Material outlet
7. (fixed) roll
8. (mobile) roll
9. Pivot
10. Roll gap
11. (long) lever
12. (short)lever
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13. Tension spring
14. Pivot
15. Pivot
16. Bearing point
17. Vibrochannel
18. Frequency converter control
This is an embodiment of the invention several modifications are possible which may be considered within the ambit and spirit of this invention. Since any modification, variations and changes in detail may be made to the above described embodiment it is intended that all matters described in the foregoing description and illustration in the accompanying drawing may be considered within the spirit of this invention.
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WE CLAIM :
1. Roll shelters, especially mbber roll shellers(l) for hulling rice and other grains,
which shows a housing (2) with an upper material inlet (4) and a lower
material outlet (6), a feeding device for the grains, a pair of diagonally
arranged rubber rolls (7,8) and a feeder chute (5) which is arranged almost
perpendicular to the connecting line of the centres of the rubber rolls (7,8) and
is inclined and adjustable, is characterized by the fact that a lever (11) that is
linked at one end in a pivot (14) and at the other end in a pivot (16) of the
mobile roll (8) and is connected with a link to a short lever (12), where by the
short lever (12) connects the long lever (11) with the feeder chute (5) by a link.
2. Roll sheller according to claim 1, is characterized by the fact that the feeding
device is a vibro-feeder(3) with a vibrochannel (17), which has a pressure
relieving cone in inlet.
3. Roll sheller according to the claims 1 or 2 is characterized by the fact that
underneath the material outlet (6) there is a hull separator.
4. Roll sheller according to claim 2 is characterized by the fact that the
excitation frequency of the vibro channel (\2\ can be adjusted.


Dated this 23rd day of November, 2002.
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Documents:

1075-MUM-2002-ABSTRACT(2-12-2002).pdf

1075-mum-2002-abstract(amended)-(28-2-2005).pdf

1075-mum-2002-abstract(granted)-(2-9-2005).doc

1075-mum-2002-abstract(granted)-(2-9-2005).pdf

1075-mum-2002-cancelled pages(28-2-2005).pdf

1075-mum-2002-claims(2-12-2002).doc

1075-mum-2002-claims(2-12-2002).pdf

1075-mum-2002-claims(amended)-(28-2-2005).pdf

1075-MUM-2002-CLAIMS(COMPLETE)-(2-12-2002).pdf

1075-mum-2002-claims(granted)-(2-9-2005).doc

1075-mum-2002-claims(granted)-(2-9-2005).pdf

1075-mum-2002-correspondence(28-2-2005).pdf

1075-mum-2002-correspondence(ipo)-(2-9-2005).pdf

1075-MUM-2002-CORRESPONDENCE(IPO)-(23-9-2005).pdf

1075-mum-2002-description(complete)-(2-12-2002).pdf

1075-mum-2002-description(granted)-(2-9-2005).pdf

1075-mum-2002-drawing(2-12-2002).pdf

1075-mum-2002-drawing(granted)-(2-9-2005).pdf

1075-mum-2002-form 1(2-12-2002).pdf

1075-MUM-2002-FORM 1(25-2-2003).pdf

1075-MUM-2002-FORM 1(28-2-2005).pdf

1075-mum-2002-form 19(11-2-2004).pdf

1075-mum-2002-form 2(2-12-2002).doc

1075-mum-2002-form 2(2-12-2002).pdf

1075-MUM-2002-FORM 2(COMPLETE)-(2-12-2002).pdf

1075-mum-2002-form 2(granted)-(2-9-2005).doc

1075-mum-2002-form 2(granted)-(2-9-2005).pdf

1075-mum-2002-form 2(title page)-(2-12-2002).pdf

1075-MUM-2002-FORM 2(TITLE PAGE)-(COMPLETE)-(2-12-2002).pdf

1075-mum-2002-form 2(title page)-(granted)-(2-9-2005).pdf

1075-MUM-2002-FORM 3(18-8-2004).pdf

1075-mum-2002-form 3(2-12-2002).pdf

1075-MUM-2002-FORM 3(28-2-2005).pdf

1075-MUM-2002-FORM 5(18-8-2004).pdf

1075-mum-2002-form 5(2-12-2002).pdf

1075-MUM-2002-FORM 5(28-2-2005).pdf

1075-mum-2002-general power of attorney(28-3-2003).pdf

1075-mum-2002-specification(amended)-(28-2-2005).pdf


Patent Number 195958
Indian Patent Application Number 1075/MUM/2002
PG Journal Number 24/2010
Publication Date 11-Jun-2010
Grant Date
Date of Filing 02-Dec-2002
Name of Patentee BUHLER AG
Applicant Address CH-9240 UZWIL, SWITZERLAND,
Inventors:
# Inventor's Name Inventor's Address
1 FRANK-OTTO GORLITZ OLBRICHTSTRASSE 16, DE-38116 BRAUNSHWEIG
PCT International Classification Number N/A
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 1900-01-01 IB